Why Does Exogamy, the Practice of Seeking a Husband or Wife

Why does exogamy, the practice of seeking a husband or wife outside one's own kin group, have adaptive value outside of biological concerns?

A) It increases the likelihood that disadvantageous alleles will find phenotypic expression and thus be eliminated from the population.
B) Exogamy creates new social ties and alliances, providing access to more resources and social networks.
C) It impedes peaceful relations among social groups and therefore promotes population expansion.
D) It was an important causal factor in the origin of social stratification.
E) Exogamy is not adaptive; it is just a culture construction.